HONOLULU (AP) The state Department of Agriculture says it captured three coqui frogs on Oahu.

One frog was found on a boat at a Kahaluu home and the others were found at nurseries in Kaimuki and Kunia.

Neighbors reported to state officials this week that they heard the frogs' distinct mating call.

Curbing the spread of the noisy frogs is important to Hawaii, where they can reproduce quickly because they don't have natural predators here. The frogs are already well established on the Big Island.

Agriculture officials suspect that the frogs found at the nurseries hitchhiked from the Big Island on plants. They believe the Kahaluu one arrived on the boat when it was shipped on a barge from the Big Island.